alexa Validation and uncertainty assessment of rapid extraction and clean-up methods for the determination of 16 organochlorine pesticide residues in vegetables.


Modern Chemistry & Applications

Author(s): YenisoyKaraka S

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Abstract Rapid and practical extraction methods were developed using dichloromethane and ethyl acetate for the routine determination of 16 organochlorine pesticide residues and applied to approximately 30 fresh vegetables (tomato, cucumber and pepper) by using GC-ECD. The procedures were validated. Measurement uncertainties were calculated by applying bottom-up approach. The average recoveries obtained for each pesticide ranged between 65 and 102\% at three fortification levels. The uncertainties of the analytical methods were lower than 21 and 16\% with and without recovery correction, respectively. The calculated limits of detection and quantification were typically less than 1 ng g(-1) that were much lower than the maximum residue levels. This article was published in Anal Chim Acta and referenced in Modern Chemistry & Applications

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